Mutations should be done by RenderTreeUpdater only.
Created attachment 317579 [details] patch
Comment on attachment 317579 [details] patch Attachment 317579 [details] did not pass mac-wk2-ews (mac-wk2): Output: http://webkit-queues.webkit.org/results/4278808 New failing tests: fast/css-generated-content/close-quote-negative-depth.html
Created attachment 317585 [details] Archive of layout-test-results from ews107 for mac-elcapitan-wk2 The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews. Bot: ews107 Port: mac-elcapitan-wk2 Platform: Mac OS X 10.11.6
Comment on attachment 317579 [details] patch Attachment 317579 [details] did not pass ios-sim-ews (ios-simulator-wk2): Output: http://webkit-queues.webkit.org/results/4278946 New failing tests: http/tests/security/contentSecurityPolicy/report-status-code-zero-when-using-https.html fast/css-generated-content/close-quote-negative-depth.html
Created attachment 317587 [details] Archive of layout-test-results from ews125 for ios-simulator-wk2 The attached test failures were seen while running run-webkit-tests on the ios-sim-ews. Bot: ews125 Port: ios-simulator-wk2 Platform: Mac OS X 10.12.5
Comment on attachment 317579 [details] patch Attachment 317579 [details] did not pass mac-ews (mac): Output: http://webkit-queues.webkit.org/results/4279098 New failing tests: fast/css-generated-content/close-quote-negative-depth.html
Created attachment 317596 [details] Archive of layout-test-results from ews102 for mac-elcapitan The attached test failures were seen while running run-webkit-tests on the mac-ews. Bot: ews102 Port: mac-elcapitan Platform: Mac OS X 10.11.6
Created attachment 317598 [details] patch
Comment on attachment 317598 [details] patch I wish there was a way to not have this special node add/remove on the RenderView. I'm concerned we'll end up with many of these types while they should instead be in of some kind of context that we pass around during layout/painting etc (well probably not this one though).
I think this is a slightly different case as it is not a layout time structure.
Comment on attachment 317598 [details] patch Clearing flags on attachment: 317598 Committed r220447: <http://trac.webkit.org/changeset/220447>
All reviewed patches have been landed. Closing bug.